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1. In a normal frequency distribution, 32% of the cases:
A) fall between 1 standard deviation above and 1 standard deviation below the mean.
B) fall beyond 1 standard deviation above and 1 standard deviation below the mean.
C) fall between the mode and the median.
D) fall beyond 2 standard deviations above and 2 standard deviations below the mean.
E) determine whether the distribution is leptokurtic.
2. Standard scores (Z) are useful because they always have a mean of zero and a standard deviation of one.
A) True
B) False
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